ANTH 110 Study Guide - Etne, American Law And Economics Association, Argot
Document Summary
Exploit different recourses to maximize access to food and minimize competition. Tell us that something is older or younger than something else, but not by how much. E. g. two craniums found at different depths, we assume the one deeper is older. One of first techniques to be used by scientists. Stratigraphy is based on principle of superposition - states that a lower stratum is older than a higher one. Earth disturbances may shift strata and the oject and makes it difficult to determine the chronology. Bones in earth are exposed to seepage that contains fluorine. The longer in the earth the more fluorine. Bones deposited at same time - same amount of fluorine. Can only be used with bones from same location b/c different areas have different amounts of fluorine. Both stratigraphy and fluorine analysis can"t determine exact age. Must used radio active decay to determine age - isotopes decay overtime - change chemically.
